Pedigrees can show someone is a carrier for diseases by determining which parent, if not both, is either dominant or recessive. Each child must have a letter from their parent then that will determine if someone gets a disease or not then it goes on from generation to generation.
What is a carrier in pedigree?
In these problems you examine family pedigrees displaying a rare disease trait and calculate the probability that. various unaffected family members are “carriers,” (that is, they carry a single disease allele).
How do you represent a female carrier in a pedigree?
In a pedigree, a circle represents a female, and a square represents a male. A filled-in circle or square shows that the individual has the trait being studied.
How is a male carrier represented on a pedigree chart?
A square represents a male. A horizontal line connecting a male and female represents a marriage. A vertical line and a bracket connect the parents to their children. A half-shaded circle or square indicates that a person is a carrier of the trait.
Why is a female carrier not affected?
Because females have two copies of X-linked genes, they will not be affected by inheriting of a single recessive mutation on an X-linked gene. For X-linked recessive diseases to occur in females, both copies of the gene must be mutated.
What is a carrier of a disease called?
Disease carrier could refer to: Asymptomatic carrier, a person or organism infected with an infectious disease agent, but displays no symptoms. Genetic carrier, a person or organism that has inherited a genetic trait or mutation, but displays no symptoms.
How many generations are shown in this pedigree?
(7.4) Pedigree flashcards
|How many generations are shown on this pedigree?,||3 generations are shown.|
|Which individual is a female affected by the trait of interest?,||I-2 is the affected female.|
|Which individual is a male affected by the trail of interest?,||III-2 is the affected male.|